Valve.



0.. SGHLEMMER.

' VALVE,

APPLICATION nun JAN. 2a, 1908.

973,075, Patented 0ct.18,1910.

C INVENTOR.

Ola/e r 5c]: Zemmer ATTORNEY.

g which the following is a. specification.

valve seat is that by provlding a permanent stop at closthe permanent stop within the valve casing i To all whom it may concern: I

OLIVER SCHIJEMllIER, OF CINCINNATI, OHIO.

VALVE.

Specification of Letters Patent. Application filed January 23, 1908. Serial No. 412,261.

that I, OLIvER SCHLEMMER, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Valves, of

Be it known The object of my invention is to provide a valve of improved construction and .operation, and my invention consists in the combination and arrangement of parts hereinafter described and claimed. v

In the drawings Figure 1, is a vertical sect-ion of a valve embodying my invention. Fig. 2, a section on line 22 of Fig. 1, Fig. 3, a section on line 3-3 of Fig. 1, Fig. 4 a section on line 4-4 of Fig. 3, Fig. 5, a bottom plan view of the valve disk shown in Fig. 1, and Fig. 6, a vertical section of another form of valve stem mounting.

In the construct-ion illustrated in the drawings, the valve casing A has a removable valve seat B screw, threaded therein. The

provided with openings or ports Z) at either side and a central opening for the passage of the valve stem 0. On valve adjusting the stop a to stem 0 and below seat B is secured the valve disk C which is provided with ports 0 adapted to register with ports I) when turned to the proper position. The connect-ion between valve disk C and its stem 0 is preterablv made by means of a cross pin 0' driven through stem 0 and lying between two pins 0 A lug and a permanent stop I) on valve disk C and valve seat B serve to stop the disk when in closing position. It will be seen ing position of the valve, and contained within the casing, the closing position-of the valve is permanent-1y and definitely located and accidental or mischievous displacements prevented. Moreover by having the one assembling the valve may see the relat ve positions of the parts, thus the more readily assembling them in correct positions.

An adjustable ring a is secured to casing y means of set screw a and carries a stop (i adapted to cooperate with arm a to limit the opening movement of valve disk C. It will be seen that by adjusting the ring a and stop (5 the opening movement of valve disk C may be regulated as desired, to give either a full opening to the valve or an smaller extent of opening. This will be found to be a very desirable feature, espehaving the greater circulating head the friction being the same would receive more than their due proportion of the hot water. By permit opening of the valves inaccordance with their circulat-ing heads, all radiators may be supplied with their due proportion of Water, notwithstanding variations in circulating head.

' Patented Oct. 18, 1910.

Atthe section occupied by the valve disk and seat, the area of the passage through the casing A is considerably enlarged as shown, and the combined area of the ports in the disk or seat are made equal to or greater than the area of the inlet or outlet, which are equal in area. The disk C is provided with composition packing blocks D having beveled edges (Z. In the top of easing A is threaded a plug E in which the valve stem 0 is threaded with a comparatively steep thread it. At its lower end c,

plugE is ground to fit a seat a in casin A. stufling box'e is threaded to the upper end of plug E. The usual couplings are provided at elther opening of easing A. By this construction it will be seen that by turning stem 0, the ports 0 may be brought to register with or other fluid under pressure permitted to pass upward through the valve seat and easing, as indicated by the arrows. As stem a is turned in plugE in one direction, the slight play between pin's'c and 0 will permit the valve disk to be depressed to free it from the valve seat before the disk begins to turn, thus permitting easy turning to open ports 6, while when turned to. the opposite direction, the disk Wlll be first brought to closing position and then forcibly and positively pressed against the valve seat soas to tightly close the ports 7). The beveled edges d of packing blocks D will serve to scrape off sediment-or scale from the valve seat. tightness of the contact between disk- 0 and valve seat B may be regulated as desired. When it is desired to repack the stufiing box ports 6, and steam, water By adjusting plug E, the

c, plug E may be screwed down until its 7 invention into effect, this may the pressure on the stuffing is always relieved when the valve is closed, thus lengthening the life of the stufiing and facilitatin repacking. By makin the valve seat removable, repairs an adjustments thereof are facilitated.

In Fig. 6, I have illustrated another form of valve stem mounting, especially adapted for use with very high pressure. Here the valve stem 0 is suviled in a threaded plug or support G,'having an operating handle 9. By this construction it will be seen that the valve disk may be turned to closing position and then tightly clamped to its valve seat by turning plug G. When it is desired to open the valve plug G may be operated to force the disk from its seat, whereupon the disk may be readily turned by means of stem 9.

While I have illustrated and described the preferred construction for carrying my be varied without departing from the spirit of the invention. I therefore do not wish to be limited to the exact construction set forth but What I claim as new and desire to secure by Letters Patent is:

1. In a device of the class described, the combination of a fiat valve seat provided with a port, a rotatable disk valve having a port adapted to register with the port in the valve seat, arotatable valve stem carrying the .;valve and having a connection with the valve which permits of limited rotary play between the stem and valve, and means for moving the valve toward and away from its seat upon rotation of the valve stem, substantially as specified.

2. In a device of the class described, th combination of a flat valve seat provided with a port, a rotatable disk valve having acking blocks having a port adapted to register Witl the port in the valve seat, a rotatable valve stem carrying the valve and having a connection with the valve which permits of limited rotary play between the stem and valve, and an adjustable plug having a threaded connection with the valve stem, substantially as specified.

3. In a device of the character described, the combination of a valve casing, having an enlarged portion between its inlet and outlet, a flat valve seat provided with ports, said flat valve located in said enlarged part of easing, a valve disk'having a port adapted to register with the ports in the valve seat, and held against the seat by the pressure of the confined fluid, an adjustable threaded support ground at its lower end to fit a seat in the valve casing, and a valve stem mounted in the threaded support and carrying the valve, as set forth.

4. In a device of the class described, the combination of casing A, valve seat threaded therein, valve disk C carried by valve stem 0 and having limited rotary play therein, and the adjustable threaded plug E having a threaded connection with valve stem 0, substantially as specified.

5. In a device of the class described, the combination of a valve seatprovided with a port, a valve disk having a port adapted to register with the port in the valve seat, beveled edges, said eveled edges adapted to scrape the valve seat, and means for turning the valve disk,

substantially as specified.

OLIVER SCI-ILEMMER.

\Vitnesses:

ARTHUR E. GEORGE, BRAYTON G. RICHARDS. 

